Container Security Assessment
We assess your container images and runtime for the issues that lead to escapes and secret theft — vulnerable base images, secrets baked into layers, and weak runtime hardening.
What is Container Security Assessment?
Containers are only as safe as their images and runtime. We analyse your images for vulnerable dependencies and baked-in secrets, and review runtime configuration for the privileges that turn a container compromise into a host one.
Containers move fast and carry their history with them, which is exactly the problem: a secret added in an early image layer stays recoverable even after a later layer 'removes' it, and a vulnerable base image ships its CVEs into production untouched. We assess your images and runtime configuration for the issues that turn a container compromise into secret theft or a host breakout.
Container assessments also address a uniquely modern failure mode: the speed of the pipeline. Images rebuild constantly, dependencies update automatically, and a vulnerable or poisoned component can reach production in minutes with no human in the loop. Assessing images and the pipeline that builds them puts a check back into a process designed to remove friction.
Container Security Assessment is a manual, exploit-driven assessment: real people attacking your target the way an adversary would, then proving each finding with a working proof of concept. It is not an automated scan with a logo on it — the point is to find and demonstrate the issues that actually put you at risk, and hand your team a clear plan to fix them.
Why it matters
Cloud breaches rarely come from a single flaw; they come from chains of small misconfigurations that end in full account takeover. Identity and configuration are the new perimeter, and both fail silently.
A container security assessment engagement replaces guesswork with evidence. Instead of hoping your controls hold, you get a ranked, reproducible picture of where they don’t — before someone hostile finds the same gaps.
Industries & use cases
Container assessments suit teams adopting Docker and Kubernetes, CI/CD-heavy engineering orgs, and any product shipping containerised workloads to production.
What we test
Manual, exploit-driven coverage focused on real impact — not scanner noise.
- Image and dependency vulnerabilities
- Secrets in image layers
- Insecure Dockerfile practices
- Runtime and privilege hardening
- Registry exposure and access
- Build pipeline security
Signs you should run a container security assessment
If any of these apply, testing is overdue.
- You ship containerised workloads to production
- You have a fast, automated CI/CD pipeline
- You pull base images and dependencies from public sources
- You run containers with broad privileges
- You want supply-chain assurance for your images
Common vulnerabilities we find
The issues that show up again and again in container security assessment — and the ones that actually get exploited.
Vulnerable base images
Known CVEs shipped in the image's dependencies.
Secrets in layers
Credentials committed into image history.
Privileged runtime
Containers running as root or with dangerous mounts.
Running as root / excessive capabilities
Containers with unnecessary privileges that ease escape.
Registry and supply-chain exposure
Unsigned images or a registry accessible to attackers.
Outdated, unpatched dependencies
Known-vulnerable packages carried in images to production.
Writable or root filesystems
Containers able to modify themselves or the host.
Missing image signing/verification
No guarantee that a deployed image is the one you built.
Example attack chain
Real impact rarely comes from one bug — it comes from chaining several. A representative example:
Why choose webhook.press
Attacker mindset
We’re offensive security people who also build the free tools bug-bounty hunters use daily. We test the way real adversaries do — and prove it.
No scanner theatre
You get findings a human exploited and verified, ranked by real business risk — not an unfiltered tool dump padded to look thorough.
Fixed price, free retest
A clear quote after scoping, a report your team and auditors can use, and a free retest to confirm the fixes hold.
Our methodology
A structured, transparent process aligned to OWASP and PTES — with a named point of contact throughout.
Scoping & rules of engagement
We agree the exact targets, depth, timing and constraints for your container security assessment, and set clear rules of engagement so testing is safe and predictable.
Reconnaissance & mapping
We enumerate the full attack surface — endpoints, roles, technologies and trust boundaries — and threat-model where an attacker would focus.
Manual testing & exploitation
We attack by hand, verifying and chaining weaknesses into real impact. Automated tooling supports coverage; humans find the logic and authorization bugs it can’t.
Analysis & risk rating
Each finding is validated, rated by real business risk rather than raw scanner severity, and de-duplicated so you get signal, not noise.
Reporting
You receive an executive summary for leadership and a technical section with reproducible PoCs, evidence and concrete, stack-specific remediation.
Free retest
After you remediate, we re-test the closed findings to confirm they are actually fixed — at no extra cost.
What you get
Reproducible PoCs
Every finding ships with a working proof and step-by-step reproduction your engineers can replay and verify.
Risk-ranked findings
Prioritised by real business impact, so you fix what matters first instead of drowning in low-severity noise.
Actionable remediation
Concrete, stack-specific fixes and guidance — not generic “apply best practice” filler.
Free retest
We re-check the closed findings after remediation and confirm they’re resolved.
The report is written for two audiences at once: an executive summary that a non-technical stakeholder can act on, and a detailed technical section — findings, evidence, CVSS and reproduction — that your developers and auditors can use directly.
Manual testing, not just a scan
Automated scanners are fast and useful for coverage, but they only find patterns they already know, and they flood you with false positives. They cannot understand your business logic, chain several small issues into a breach, or tell you which alert actually matters. Our container security assessment is led by experienced testers who exploit findings by hand and rank them by the damage they’d really do — the difference between a 300-page tool dump and a short list of things worth fixing.
Standards & compliance
Our container security assessment reports are written to support the frameworks your auditors and customers care about — including SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, and the EU’s NIS2 and DORA. Each engagement produces clear, independent evidence of testing with scope, methodology and findings documented the way assessors expect, so the same test both hardens your systems and helps satisfy your obligations.
Frameworks we follow
Recognised methodologies, adapted to your target — never a rigid checklist.
- OWASP — Web Security Testing Guide, ASVS and the API Security Top 10
- PTES — the Penetration Testing Execution Standard
- NIST SP 800-115 — technical guide to security testing
- OSSTMM — Open Source Security Testing Methodology Manual
- MITRE ATT&CK — to frame real-world adversary techniques
FAQ
Images only, or runtime too?
Both — static image analysis plus runtime configuration review.
Docker and OCI?
Yes — Docker, containerd and OCI images across registries.
Images, runtime, or both?
Both — static image analysis plus runtime and orchestration configuration.
Do you check the build pipeline?
We review how images are built and pushed, since that's where secrets and supply-chain risk enter.
Do you assess the CI/CD pipeline?
Yes — where images are built and pushed is where secrets and supply-chain risk enter, so it's in scope.
Do you check for image signing?
Yes — provenance and signing are key to knowing production runs what you built.
How long does a container security assessment take?
Most focused engagements run one to two weeks depending on scope; we agree the exact timeline during scoping.
Is a retest included?
Yes — after you remediate, we re-check the closed findings to confirm they’re fixed, at no extra cost.
How do you price it?
Per engagement, based on scope and depth — you get a fixed quote after a short scoping call. No cookie-cutter packages.
Why teams trust our container security assessment
Aligned to recognised standards
Testing follows OWASP, PTES, NIST SP 800-115 and MITRE ATT&CK, and reports support SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, NIS2 and DORA.
Every engagement includes
Reproducible PoCs, risk-ranked findings, concrete remediation, a named point of contact, a free retest, and a summary letter of attestation.
Confidential by default
Work is covered by an NDA, scoped with clear rules of engagement, and data is handled with care throughout — including residency requirements.
Sample report available on request — see our reporting format and depth before you commit. Ask for a sample →
Get a quote for Container Security Assessment
Tell us about the target — we’ll come back with scope and a fixed price. Manual, exploit-driven testing with reproducible proof and a free retest.